Diablosport offers this modified powertrain control module (PCM) that replaces the factory PCM. 2016 Jeep Grand Cherokee WK2s come from the factory with an encrypted (locked) PCM that cannot be tuned. Because of this, DiabloSport handheld tuners will not work with any 2015 and up FCA vehicle with an unmodified (stock) PCM. These vehicles require a DiabloSport modified PCM installed prior to any tuning. Each DiabloSport PCM is year, make and model specific. These PCM modules are only compatible with the DiabloSport brand tuners and will not work with Edge or Superchips line of handheld tuners. Compatible tuner lines include: inTune i2, inTune i3, Trinity, and Trinity T2 tuners.
Warning: This product is not street legal and may only be used on Racing Vehicles. Not available for sale or use on pollution controlled vehicles in the state of California.

PCM Modification: Swapping PCM Modules is quick and easy, typically only taking 20-30 minutes using common hand tools. Once you have replaced the factory PCM, you can install a tune with your DiabloSport tuner of choice and you’re ready to go. If at any time you need to go to the dealership for service, re-install your original PCM and the dealer will not be able to tell that any modifications to your vehicle computer are present.